Katherine Waselkov

Katherine Waselkov
California State University, Fresno | Fresno State · Department of Biology

Ph.D.

About

10
Publications
4,313
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143
Citations
Additional affiliations
September 2013 - August 2015
Kansas State University
Position
  • PostDoc Position
August 2006 - August 2013
Washington University in St. Louis
Position
  • PhD Student
August 2002 - May 2006
University of Florida
Position
  • Student

Publications

Publications (10)
Article
Full-text available
Here, we report the results of 16S rRNA gene amplicon sequencing of bacterial endophytes from parasitized and unparasitized samples of the common sunflower (Helianthus annuus) and samples of its associated plant parasite field dodder (Cuscuta campestris), collected from one location in Fresno County, California (August 2017).
Article
Full-text available
There is increasing interest in documenting adaptation of weedy plant species to agricultural ecosystems, beyond the evolution of herbicide resistance. Waterhemp (Amaranthus tuberculatus) is a native plant of the Midwestern U.S. that began infesting agricultural fields in the 20th century within the central portion of its range. We hypothesized tha...
Article
Full-text available
The genus Amaranthus (pigweeds) is a group of ∼74 monoecious or dioecious annual species native to every continent but Antarctica, frequently associated with natural and human disturbance, with several economically important domesticated and weedy species. We set out to reconstruct the phylogeny of Amaranthus, with broad geographic sampling, in ord...
Article
Full-text available
Unlabelled: • Premise of the study: The evolution of invasiveness has been extensively studied in natural ecosystems; however, far less is known about the evolution of agricultural invasiveness, despite the major economic impact of weeds on crop productivity. Examining the population structure of recently arisen weeds can provide insights into e...
Article
Full-text available
Leucothoë is here defined as a genus of five species (L. axillaris, L. fontanesiana, L. griffithiana, L. keiskei, and L. davisiae), occurring in eastern Asia and western and eastern North America. Generic autapomorphies include autumn-formed inflorescences with meiosis occurring in the autumn. Members of the Leucothoë clade, which are evergreen, ar...
Article
Full-text available
Eubotrys includes E. racemosa and E. recurva, and these species form a southern Appalachian - southeastern Coastal Plain species pair. Generic autapomorphies include deciduous leaves with unicellular hairs on the lamina both adaxially and abaxially, megagametophytes with antipodals dividing, and quickly deciduous inflorescence bracts that are photo...
Article
Full-text available
Phylogenetic relationships within the genus Leucothoe s.l. (including all eight species) and related taxa of the Gaultherieae, Andromedeae, and Vaccinieae were investigated by a cladistic analysis based on phenotypic (external morphology, anatomy, chromosome number, and secondary chemistry) characters. The parsimony analysis resulted in two most pa...
Article
Cheirolepidiaceous conifer pollen cones (Classostrobus arkansensis new species) from the Lower Cretaceous (Aptian/ Albian) Holly Creek Formation of Arkansas, some still attached to Pseudofrenelopsis parceramosa Fontaine, shoots, bear helically arranged, semipeltate to dorsiventral microsporophylls with abaxially situated pollen masses. The in situ...

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Projects

Projects (3)
Project
We are investigating polyploidy and diversity in the plant genus Phlox (Polemoniaceae), with a focus on three particular polyploid assemblages (P. amabilis, P. nana and P. woodhousei), all of which occur as diploid, tetraploid and hexaploid populations in the ecologically diverse southwestern U.S. Specific research questions to be addressed in these assemblages relate to: polyploid origins and patterns to formation (phylogenetic diversity), genetic structure and patterns of gene flow (population genetic diversity), phenotypic patterns and phenotypic potential (morphological diversity), ecological niche divergence and correlates among data (ecological diversity), and taxonomic interpretation and broader consequences (integration). This research employs the expertise of three collaborating PIs: Ferguson, Kansas State University (KSU); Fehlberg, Desert Botanical Garden (Arizona; DBG); and Prather, Michigan State University (MSU).